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EWG's Tap Water Database — 2019 UPDATE

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Nitrate

Auburn Water System

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

 

40

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND60ND
2013ND60ND
20140.0143 ppm71ND - 0.1000 ppm
2015ND70ND
2016ND70ND
2017ND70ND

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Result
2012-04-02ND
2012-04-02ND
2012-04-02ND
2012-04-02ND
2012-04-02ND
2012-04-02ND
2013-05-07ND
2013-05-07ND
2013-05-07ND
2013-05-07ND
2013-05-07ND
2013-05-07ND
2014-02-260.1000 ppm
2014-03-04ND
2014-03-04ND
2014-03-04ND
2014-03-04ND
2014-03-04ND
2014-03-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2015-05-04ND
2016-04-04ND
2016-04-04ND
2016-04-04ND
2016-04-04ND
2016-04-04ND
2016-04-04ND
2016-04-04ND
2017-04-04ND
2017-04-04ND
2017-04-04ND
2017-04-04ND
2017-04-04ND
2017-04-04ND
2017-04-04ND